A074136 Main diagonal of triangle A074135.

1, 4, 7, 13, 18, 21, 28, 40, 49, 64, 75, 81, 94, 115, 130, 138, 155, 182, 201, 211, 232, 265, 288, 300, 325, 364, 391, 433, 462, 477, 508, 556, 589, 606, 641, 695, 732, 751, 790, 850, 891, 912, 955, 1021, 1066, 1089, 1136, 1208, 1257, 1282, 1333, 1411, 1464

Offset

1,2

Links

Table of n, a(n) for n=1..53.

Crossrefs

Cf. A074135.

Sequence in context: A049698 A288823 A310823 * A310824 A266811 A085787

Adjacent sequences: A074133 A074134 A074135 * A074137 A074138 A074139

Keyword

nonn,easy,less

Author

Amarnath Murthy, Aug 27 2002

Status

approved