A094946 a(n) is 10110(3 1's)0...0(n 1's).

1, 1011, 10110111, 1011011101111, 1011011101111011111, 10110111011110111110111111, 1011011101111011111011111101111111, 1011011101111011111011111101111111011111111

Offset

0,2

Comments

Sum of n-th term digits is C(n+2,2).

Links

Table of n, a(n) for n=0..7.

Formula

a(n) = A094945((n+1)(n+2)/2+n)

a(n) = a(n-1)*10^(n+1) + (10^n-1)/9. Franklin T. Adams-Watters, Aug 21 2013

Crossrefs

Cf. A023532.

Sequence in context: A178396 A178349 A291962 * A158877 A159774 A072140

Adjacent sequences: A094943 A094944 A094945 * A094947 A094948 A094949

Keyword

easy,nonn,base

Author

Paul Barry, May 25 2004

Extensions

Name changed by Franklin T. Adams-Watters, Aug 21 2013

Status

approved