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A351025
a(n) is the rank of the US English name of n when all its letters are written in all possible orders and arranged in alphabetic order.
0
20, 6, 4, 57, 2, 10, 3, 41, 13, 10, 5, 29, 232, 8446, 6466, 574, 1618, 5422, 1594, 780, 193, 32916, 16414, 851577, 1190618, 597346, 106029, 1153421, 2552293, 114778, 181, 127176, 26974, 592647, 568178, 592306, 50589, 6762941, 1191493, 330598, 1, 3696, 94
OFFSET
0,1
COMMENTS
For terms beyond a(100), this sequence uses the US English style, "one hundred one" (not "one hundred and one"), and the short scale (a billion = 10^9, not 10^12).
EXAMPLE
The word ONE comes sixth when all its letters are written in all possible orders and arranged in alphabetic order: ENO, EON, NEO, NOE, OEN, ONE. So a(1) = 6.
The word TWO comes fourth when all its letters are written in all possible orders and arranged in alphabetic order: OTW, OWT, TOW, TWO, WOT, WTO. So a(2) = 4.
CROSSREFS
Cf. A005589.
Sequence in context: A040385 A161997 A274458 * A327131 A076594 A174991
KEYWORD
nonn,word
AUTHOR
Mohammed Yaseen, Jan 29 2022
STATUS
approved