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A335117
Records in A304480.
4
1, 3, 25, 241, 505, 65521, 131041, 171865, 138181681, 6814407601, 20174525281, 45185409361, 558781423201, 685933859521, 2601256998740401, 4578654981700801, 15571124394460034401, 375159113055066740401, 124708934978441512498801, 127589793288205521873601, 8644416283014847832296801, 29217965124687229769336641
OFFSET
1,2
FORMULA
a(n) = A304480(A335116(n)).
a(n) = A335128(n-1)+1 for n > 2.
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, May 24 2020
STATUS
approved