A273981 Erroneous version of A005897.

1, 4, 26, 56, 98, 152, 218, 296, 386, 488, 602, 728, 866, 1016, 1178, 1352, 1538, 1736, 1946, 2168, 2402, 2648, 2906, 3176, 3458, 3752, 4058, 4376, 4706, 5048, 5402, 5768, 6146, 6536, 6938, 7352, 7778, 8216, 8666, 9128, 9602, 10088

Offset: 1

Author

Sébastien Dumortier, Jun 05 2016

Keywords

• dead

Formula

a(n) = 6*n^2 - 12*n + 8 = A005897(n-1) for n > 2.

a(n) = n^3 - (n-2)^3 for n > 2. - Joerg Arndt, Jun 06 2016