A118762 First differences of A118757.

1, 1, 1, 1, 1, 1, 1, 1, 1, 10, -1, -1, -1, -1, -1, -1, -1, -1, -1, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 10, -1, -1, -1, -1, -1, -1, -1, -1, -1, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 10, -1, -1, -1, -1, -1, -1, -1, -1, -1, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 10, -1, -1, -1, -1, -1, -1, -1, -1, -1, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 10, -1, -1, -1, -1, -1, -1, -1, -1, -1

Offset: 1

Author

Reinhard Zumkeller, May 01 2006

Keywords

• sign

Comments

a(10^k-1) = 10^k for 0

abs(a(n)) = 10^k not for all n: e.g. a(1155) = A118757(1156) - A118757(1155) = 1123 - 1121 = 2.

Crossrefs

Cf. A118768.

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