A182833 - OEIS

A182833

Joint-rank array of the numbers j*e^(i-1), read by antidiagonals.

1, 2, 3, 4, 7, 10, 5, 12, 21, 30, 6, 15, 34, 61, 84, 8, 19, 44, 94, 170, 232, 9, 24, 55, 124, 257, 466, 635, 11, 28, 68, 155, 342, 702, 1272, 1731, 13, 32, 79, 188, 427, 935, 1912, 3465, 4711, 14, 37, 91, 219, 515, 1169, 2548, 5201, 9426, 12814, 16, 41, 103, 251

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Joint-rank arrays are defined in the first comment at A182801. (Column 1)=A117869. Every positive integer occurs exactly once, so that as a sequence, A182833 is a permutation of the positive integers.

LINKS

Table of n, a(n) for n=1..59.

FORMULA

T(i,j)=SUM{floor(j*e^(i-n)): n>=1}.

EXAMPLE

Northwest corner:

1....2....4....5....6...

3....7...12...15...19...

10..21...34...44...55...

30..61...94..124..155...

CROSSREFS

Cf. A182801.