A122039 Duplicate of A083706

1, 4, 9, 18, 35, 68, 133, 262, 519, 1032, 2057, 4106, 8203, 16396, 32781, 65550, 131087, 262160, 524305, 1048594, 2097171, 4194324, 8388629, 16777238, 33554455, 67108888, 134217753, 268435482, 536870939, 1073741852, 2147483677

Offset

1,2

Links

Table of n, a(n) for n=1..31.

Prog

(PARI) a(n)=if(n>1, 2*a(n-1)+(4-n), 1) for(n=1, 40, print1(a(n), ", "))

Crossrefs

Sequence in context: A301078 A320851 A027053 * A083706 A352667 A229072

Adjacent sequences: A122036 A122037 A122038 * A122040 A122041 A122042

Keyword

dead

Status

approved