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A164058 Number of curves in n-th letter of capitalized English alphabet (A being first). 1
0, 2, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0 (list; graph; refs; listen; history; text; internal format)



"Curve" as was excluded from sums in A163828. Curves are classified as: circle as occurs in {O, Q}, semicircle as in {B (twice), C, D, G, J, P, R, U}, and other {S}. We do not consider "S" as two semicircles, nor make various approximations of curves as sequences of line segments (as in A002963). In conjunction with A163828, we may sum the number of curves and straight line segments in an English magiscule (capital) letter, and thus derive an integer total of the number of straight and curved segments in the spelled-out English name of any nonnegative integer.


Table of n, a(n) for n=1..26.


a(2) = 2 because of the two semicircles in the 2nd letter, B. a(k) = 0 for k = {the letters occurring in A163670} = {A, E, F, H, I, K, L, M, N, T, V, W, X, Y, Z}.


Cf. A002963, A005589, A163670, A163828.

Sequence in context: A117200 A107015 A015374 * A328712 A319368 A092410

Adjacent sequences: A164055 A164056 A164057 * A164059 A164060 A164061




Jonathan Vos Post, Aug 08 2009



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Last modified February 2 21:10 EST 2023. Contains 360024 sequences. (Running on oeis4.)