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A336816
Inverse permutation to A305325.
3
1, 2, 3, 5, 7, 4, 13, 25, 33, 8, 49, 6, 97, 14, 9, 193, 241, 34, 481, 10, 15, 50, 961, 26, 1921, 98, 2881, 16, 3841, 11, 7681, 15361, 51, 242, 17, 35, 18433, 482, 99, 27, 36865, 18, 73729, 52, 36, 962, 147457, 194, 294913, 1922, 243, 100, 442369, 2882, 53, 28
OFFSET
1,2
FORMULA
a(A000961(n)) = 1 + Sum_{k = 1..n-1} A305215(k).
EXAMPLE
A305325(18) = 42, so a(42) = 18.
PROG
(PARI) See Links section.
CROSSREFS
KEYWORD
nonn
AUTHOR
Rémy Sigrist, Nov 21 2020
STATUS
approved