A199206 a(n) = (1+(A034939(n))^2)/5^n.

1, 1, 2, 26, 53, 365, 73, 13369, 31226, 40193, 1346393, 10982633, 59784881, 12459674, 197301737, 4044371993, 16335212753, 165277755905, 33055551181, 627510050434, 2556360882389, 25830314642530, 5166062928506, 433477841994649, 1561599571802482

Offset

0,3

Links

Zak Seidov, Table of n, a(n) for n = 0..100

Example

a(0)=(1+(A034939(0))^2)/5^0=(1+(0)^2)/1=1,
a(1)=(1+(A034939(1))^2)/5^1=(1+(2)^2)/5=1,
a(2)=(1+(A034939(2))^2)/5^2=(1+(7)^2)/25=2,
a(3)=(1+(A034939(3))^2)/5^3=(1+(57)^2)/5^3=3250/125=26.

Crossrefs

Cf. A034939.

Sequence in context: A319486 A084298 A001772 * A132861 A210848 A247957

Adjacent sequences: A199203 A199204 A199205 * A199207 A199208 A199209

Keyword

nonn

Author

Zak Seidov, Nov 04 2011

Status

approved