0,2

(7^(n+1) - 2^(n+1))/5 - Lambert Klasen (lambert.klasen(AT)gmx.net), Feb 06 2005

1/((1-2x)(1-7x)) = 1 + 9*x + 67*x^2 + 477*x^3 + 3355*x^4 + 23517*x^5 + 164683*x^6 + ...

Adjacent sequences: A016127 A016128 A016129 this_sequence A016131 A016132 A016133

Sequence in context: A091647 A106132 A105287 this_sequence A115202 A002051 A133120

nonn

njas