login
A171384
a(n) = A140475(n) - A167707(n).
0
1, 4, 4, 6, 6, 9, 10, 13, 18, 18, 23, 26, 27, 30, 34, 39, 40, 45, 47, 48, 53, 56, 61, 68, 70, 71, 74, 75, 78, 91, 93, 98, 99, 108, 108, 113, 118, 121, 125, 130, 131, 140, 141, 143, 144, 155, 166, 169, 170, 172, 177, 178, 187, 192, 197, 201, 202, 207, 210, 210, 219
OFFSET
1,2
EXAMPLE
a(1)=1-0=1, a(2)=5-1=4, a(3)=7-3=4, a(4)=11-5=6, a(5)=13-7=6, a(6)=17-8=9.
CROSSREFS
Sequence in context: A179278 A365216 A132882 * A226833 A262260 A203632
KEYWORD
nonn
AUTHOR
EXTENSIONS
Edited by Omar E. Pol, Apr 14 2010
STATUS
approved