A085870 Array defined by T(i,1)=2^i-1, T(1,j)=2^j-1, T(i,j)=T(i-1,j)+T(i-1,j-1) read by antidiagonals.

1, 3, 3, 7, 4, 7, 15, 7, 10, 15, 31, 14, 14, 22, 31, 63, 29, 21, 32, 46, 63, 125, 60, 35, 46, 68, 94, 125, 249, 123, 64, 67, 100, 140, 188, 249, 497, 248, 124, 102, 146, 208, 282, 374, 497, 993, 497, 247, 166, 213, 308, 422, 562, 746, 993, 1985, 994, 495, 290, 315, 454, 630, 844, 1120, 1490, 1985

Offset

1,2

Links

Table of n, a(n) for n=1..66.

Crossrefs

Cf. A027649 (main diagonal).

Sequence in context: A187419 A099282 A002937 * A336510 A332463 A324573

Adjacent sequences: A085867 A085868 A085869 * A085871 A085872 A085873

Keyword

nonn,tabl

Author

Benoit Cloitre, Aug 12 2003

Status

approved