A128933 A103828(n) + 1.

2, 4, 10, 28, 70, 430, 1060, 56500, 166840, 5020060, 7681810, 274343590, 8316187180

Offset

1,1

Links

Table of n, a(n) for n=1..13.

Crossrefs

Sequence in context: A278418 A321946 A244485 * A173781 A340825 A106362

Adjacent sequences: A128930 A128931 A128932 * A128934 A128935 A128936

Keyword

nonn

Author

N. J. A. Sloane, Apr 28 2007

Status

approved