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A264856
Index of first row of triangle A125605 containing n.
2
0, 2, 3, 4, 5, 6, 7, 6, 9, 10, 11, 8, 11, 10, 15, 16, 17, 18, 14, 12, 15, 22, 12, 18, 12, 22, 27, 18, 13, 20, 15, 32, 33, 34, 13, 36, 37, 14, 15, 14, 38, 42, 43, 44, 45, 16, 24, 13, 25, 50, 51, 52, 53, 54, 31, 56, 45, 58, 59, 60, 19, 62, 63, 64, 65, 66, 67
OFFSET
1,2
LINKS
PROG
(Haskell)
import Data.List (findIndex); import Data.Maybe (fromJust)
a264856 n = fromJust $ findIndex (elem n) a125605_tabl
CROSSREFS
Sequence in context: A331303 A161658 A066853 * A141258 A117656 A101918
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Nov 26 2015
STATUS
approved