0,3

The equivalent operation on A001333 yields last digits A131707 and their first differences A131715.

a(n)=a(n-12).

a(n)=(1/6)*{-(n mod 12)-3*[(n+1) mod 12]+5*[(n+2) mod 12]-3*[(n+3) mod 12]+[(n+4) mod 12]+5*[(n+5) mod 12]-9*[(n+6) mod 12]+8*[(n+7) mod 12]-5*[(n+8) mod 12]+3*[(n+9) mod 12]-[(n+10) mod 12]}, with n>=0 - Paolo P. Lava (ppl(AT)spl.at), Jul 03 2008

Sequence in context: A056357 A144554 A143088 this_sequence A034411 A066983 A048240

Adjacent sequences: A131033 A131034 A131035 this_sequence A131037 A131038 A131039

sign

Paul Curtz (bpcrtz(AT)free.fr), Sep 23 2007

Edited by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 07 2008