A023669 Convolution of A001950 and A014306.

0, 2, 7, 12, 19, 30, 42, 57, 75, 93, 114, 137, 162, 191, 222, 255, 292, 330, 372, 414, 457, 504, 553, 605, 660, 716, 777, 839, 903, 972, 1041, 1114, 1190, 1267, 1347, 1427, 1510, 1597, 1684, 1777, 1870, 1966, 2065, 2166, 2271, 2378, 2486, 2600

Offset

1,2

Links

Table of n, a(n) for n=1..48.

Crossrefs

Sequence in context: A299401 A188039 A133459 * A137401 A309150 A333354

Adjacent sequences: A023666 A023667 A023668 * A023670 A023671 A023672

Keyword

nonn

Author

Clark Kimberling

Status

approved