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A185024 Numbers occurring in just one row of Pascal's triangle. 4
2, 3, 4, 5, 7, 8, 9, 11, 12, 13, 14, 16, 17, 18, 19, 22, 23, 24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 37, 38, 39, 40, 41, 42, 43, 44, 46, 47, 48, 49, 50, 51, 52, 53, 54, 57, 58, 59, 60, 61, 62, 63, 64, 65, 67, 68, 69, 71, 72, 73, 74, 75, 76, 77, 79, 80, 81 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..2500

Wikipedia, Singmaster's conjecture

Index entries for triangles and arrays related to Pascal's triangle

FORMULA

A059233(a(n)) = 1.

a(n) = A137905(n-1), n >= 2. - Elijah Beregovsky, May 14 2019

PROG

(Haskell)

import Data.List (elemIndices)

a185024 n = a185024_list !! (n-1)

a185024_list = map (+ 2 ) $ elemIndices 1 a059233_list

CROSSREFS

Cf. A137905, A098565, A182237, A059233.

Sequence in context: A039203 A050746 A039117 * A247915 A284676 A187681

Adjacent sequences:  A185021 A185022 A185023 * A185025 A185026 A185027

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Dec 24 2012

STATUS

approved

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Last modified February 26 12:33 EST 2020. Contains 332279 sequences. (Running on oeis4.)