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A171951
Positions of 1's in A181391.
7
3, 9, 51, 97, 133, 146, 160, 172, 191, 206, 240, 261, 273, 313, 342, 362, 396, 415, 440, 470, 483, 502, 516, 536, 565, 593, 615, 640, 660, 677, 693, 724, 750, 784, 796, 807, 832, 853, 902, 949, 963, 985, 1009, 1038, 1052, 1073, 1095, 1113, 1177
OFFSET
1,1
LINKS
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Oct 29 2010
STATUS
approved