OFFSET
2,3
LINKS
Andrew Howroyd, Table of n, a(n) for n = 2..2501 (rows 1..100)
EXAMPLE
Table begins:
1;
1;
2, 1;
3, 1;
6, 3, 1;
11, 5, 2;
23, 12, 6, 3;
46, 23, 12, 6;
98, 52, 29, 18, 6;
207, 109, 63, 40, 18;
...
PROG
(PARI)
T(n)={my(A=vector(n), R=vector(n)); A[1]=1; R[1]=[]; for(i=2, n, my(t=vector(i\2, j, if(2*j<i, A[j] * A[i-j], A[i/2] * (A[i/2] + 1)/2))); forstep(j=i\2-1, 1, -1, t[j]+=t[j+1]); A[i]=t[1]; R[i]=t); R}
{ my(A=T(12)); for(n=2, #A, print(A[n])) } \\ Andrew Howroyd, Jan 01 2024
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Harry Richman, May 24 2023
EXTENSIONS
Terms a(27) and beyond from Andrew Howroyd, Jan 01 2024
STATUS
approved