A134408 First differences of A006336.

1, 1, 2, 3, 3, 5, 5, 8, 11, 11, 16, 21, 21, 29, 29, 40, 51, 51, 67, 67, 88, 109, 109, 138, 167, 167, 207, 207, 258, 309, 309, 376, 443, 443, 531, 531, 640, 749, 749, 887, 887, 1054, 1221, 1221, 1428, 1635, 1635, 1893, 1893, 2202, 2511, 2511, 2887, 2887, 3330, 3773

Offset: 1

Author

Reinhard Zumkeller, Oct 24 2007

Keywords

• nonn

Comments

a(n) = A006336(n+1) - A006336(n);

a(n+1) - a(n) = A134409(n).